code: def test_stack(
      *, dtypes_arrays, axis, test_flags, backend_fw, fn_name, on_device
  ):
      dtypes, arrays = dtypes_arrays
  
      helpers.test_function(
          input_dtypes=dtypes,
          test_flags=test_flags,
          backend_to_test=backend_fw,
          fn_name=fn_name,
          on_device=on_device,
          arrays=arrays,
          axis=axis,
      )
  
imports: import numpy
  from hypothesis import strategies, assume
  import ivy
  import ivy_tests.test_ivy.helpers
  from ivy_tests.test_ivy.helpers import handle_test
label_desc: Use image node_id 21 for calling a global function with example usage: test_stack() without return types